Sash ventilator



May 19, 1931. J. F. LEVAN sAsH VENTILATOR Filed oct. 6, 1928 Patented` May 19, 1931 UN''D' 'STATES PATENT OEEFTFCE JOHN F. LEVAN, OF ELKHARI, INDANJ, ASSEGNR TO THE ADLAKE COMPANY, F CHIGAGO, LLNOS, A CORPOBATON OF ILLINOIS SASL-I VENTILATOR Application filed October 6, 1928. Serial No. 310,766.

The obj ect of this invention is to provide an improved sash ventilator of the type in which the ventilator is mounted in the rail of the sash.

One form of the invention is presented herein for the purpose of enemplification, but it will of course be understood that the invention is susceptible of embodiment in other forms coming equally within the scope of the appended claims.

' with the openings in the accompanying drawings:

Fig. 1 is a fragmentary side view of a sash rail equipped with the ventilator;

Fig. 2 is a horizontal longitudinal section, taken on the line 2-2 of Fig. 1;

Fig. 3 is a vertical longitudinal section, taken on the line 3 3 of Fig. 2; and

Fig. 4 is a vertical transverse section, taken on the line 4 4 of Fig. 1.

As shown in the drawings, the ventilator is mounted in the lower rail 10 of a hollow sheet metal sash. The outer side wall 11 of the rail is provided with a number of small openings 12, which openings are covered by a. wire screen 13 which is held in place by a plate 14 having openings 15 which register 12. The inner side wall 16 of the rail is provided with a single large opening 17, which opening is covered by a shutter 18 consisting of a fixed plate 19 having a number of apertures 2O and a sliding plate 21 having a number of apertures 23 which are adapted to be shifted into or out of register with the apertures 2O by means of a finger-piece 24 which passes through a slot 25 in the plate 19 and is secured to the plate 21. The plate 21 slides in a groove 26 in the plate 19, and the plate 19 is set into the inner side wall 16 of the rail far enough to bring the face of the plate 19 flush with the face of the inner side wall 1G, the portion 27 of the side wall bordering the opening 17 being olset sufficiently for that purpose.

A generally rectangular frame 23 is positioned in the rail about the openings in the side walls 11 and 16, and serves to form a passageway between such openings. The frame 28 is of sheet metal construction, and preferably consists of two strips 29 and 30 which are riveted together at their ends. The

strip 29, which forms the bottom and end portions of the frame, is provided along its edges with downwardly `extending flanges 31 and outwardly extending flanges 32, and the strip 30 is provided with downwardly eX- tending flanges 33. The flanges 31, 32 and effect drainage in that direction.

The'openings 20 in the shutter are `preferably distributed overa greater distance longitudinally of the rail than the openings 15 lin the screen plate, whereby to `cause a partial di'usion of the air after it passes through the screen plate and before it enters the car or room ,in which the sash is mounted.

l claim: i V

1. In a sash ventilator, a `hollow sheet metal sashi'ailprovided with openings in the side walls thereof, a screen .plate ,mounted over the openinginthc outer side wall against the exterior face of the latter and provided with a row of air openings, a shutter plate mounted over the opening in the inner side wall against the exterior face of the latter and provided with a row of air openings, a

sheet metal frame positioned in the rail. about the openings, connecting means between the screen plate and one side of the frame, and

`other connecting means between the shutter positioned in the rail about the openings, the bottom member of the frame being sloped toward the outer side wall and being provided interiorly of the rail with marginal ne a generally rectangular sheet metal frame downwardly extending positioning anges lfor Contiguous engagement with the side wallsof the rail.

3.111. aVA sash ventilator, a hollow sheet Y metal-sash rail provided with openings in the side walls thereof, a screen mounted over the opening in the outer side wall,.a shuttermounted over the opening lin the inner side A wall, anda generally rectangular sheet metal frame positioned in the railuabout the openings, the top andbottom members of the frame being marginally -ianged and conthe rail with wall, Vand a generally. rectangular sheet metal Vframr'ipositioned in the rail about the openings, the top and bottom members of the frame being VconnectedV through the sidewalls rof the rail with the screen and the shutter.

5. In a sash ventilator, a hollow sheet metal sash rail provided vwith openings in the side walls thereof, asoreen lcovering the opening Vin the'outer -side wall, an apertured shutter plate mounted over the opening in the inner side wall in lapped relation to the edges there- 1of,'an apertured slide *positioned in a longitudinally extending groove in the back of the for shifting the latter longitudinallyV of the groove, the edges Vof the opening underlying shutter plate, an eXteriorly accessible operating handle extending through a slot in the shutter vplate into engagement with the slide the shutter plate being set into therail Afar Y 'enough t'o bring the face of the shutter'plate substantially flush with the face ofthe rail and provide end closures for` the groove in the shutter plate. Y y In testimony whereof Irhave hereunto subscribed my name. Y

Jol-IN n. LEVAN. 

